Machine for making screws.



H. P. TUWNSEND.

MACHINE 50B MAK|NGS0REWS APPLICATION FILED IUNEZL |914.

l @TM l y Pwbnted Mb., 26, 1918.

' v[IVVE/VTOR @www A ORNEY,

unire tra n s ATNT @FFQEQ HARRY r. roWNsENn, oririfia'rronn, ooixinnerionr, Assrenoarc rmi H. r. .rownsnun MANUFACTURING CQMPANY, OF HARTFORD, CONNECTICUT, A. CORPORATION Olli"`v CONNECTICUT'.

.- Beitlknoivnzthat I, HaimYiP; TOWNSEND,

'I-lartford,` in ther-county. of Hartford; and

State of Connecticuuhave invented ainevv andf Improved' li/l'achine` for; Making` Screws,

by simple changesv in` minor parteci). its

mechanism,` and a further; object-istoiprof duce a machine ofthe character. described that shall be extremely rapidi and accurate initsoperation;

`)ne form of" machine enibody-iiug;my` inrcntioii, and in theconstructionand'useofk Which'the objectsherein set` outg'assivellfs as others, may `be attained, is lillnstratedtin the accoinpanying"drawings, in Which- ,V v

Figure' 1'isf a' plany vievv of that para of a machineembodying my inventiom withiparlts vbroken away. p n

Fig.' 2 vis a viewJ ni-A front elevation off a;

part ofthe machine, with partsbrokeniawa to show construction.

Fig. 3 -i's a` detail. view, scale," enlarged,"v

showing the construction. oi' the" roclif arm step;

Prior to iny invention it has been.customsy ary, in thel niakingfoi?smallimetallicfarticles, more especially screws andi` the like,.to.I use a machine capable or' performing.: only a.

veryew of the'operations oi s lotting, shav.n ing, pointing, threading,.y boring, tapping,

milling, turning and the like, soV thaty in-L cases [Where many or all `ofi such` operations are required many machinesfrhave;been eine ployed for the; purpose. Y, improved: niaru chine. forming thesubjectmatten of this=ap. plication, embodiesameans vwhereby;- all' of the^ onerations, above mentioned; .as :Well asothf ers, may be perifoiirned.:withl at-Singlenia chine, simply'by the change afar very"few:f

of the reiner-pants.'

Myiniproi/"edf machine embodies novel"l nfiea'iis for feedingy blanlrsto.: the' Worir .li'oldeingv spindle, these. eeding: devi ces censtitut-U 'ing-V ai separateinvention set-outvf1nf acoMv i Specifieationof Letters Patent.

nacniunron MAKING scienvvs.

pending; application` filed `by ine concurrently herewithand Whichieinhodies -the cam 73`and1feediinger lever 74.- shovvn in Fig. 1, theinventiono the. present case beingconfined toithatpart of: the machine independf ent. of the. .feeding devices, except as `to cer.- tainV partswhicli havefun'ctions in connection with the structures containinggboth in? ventioiis. `.lirorder tok show the` connection between the two devices, certain parts peculiaii'tofthc'zfeeding mechanism are shown y herein but are not particularly described..

Ini the` accompanying drawings, the nuf meral-'f @denotes-fa table,-V supported in amvv suitable manner, andhaving a drivingshaft 9 Withi a pulley 8;secur`ed thereto and Connectedeby'gears and pinionslO, 11, 12, and lito drive a cani shaft 14.V Y

A chuck spindle 17 is suitably mounted in bearingson; the frame and has-a chuck 18 operated by means of a chucking;A lever 19 actuated hy a'cam` 20 on the-camshaft 14C, saidspindle also 'having fastr and loose `pulleys Ell- 2Q operating in connection with abelt shifter?) actuated as by` means off the shifter,- cani facee ofa cam Qosecured to tliecani shaft. 141 .A brake lever 26, bearing a brake 27, isfm'ounted` onthe frame and isactuated y Patented een; ee, raie.

App1iation1emme27, 1914.. Serial No. 847,772. i

cam; 28 to apply-a bralretothe fast y pulley-21. Y

A: col-bar 29 lis arranged for longitudinal movement in the frame, and carries-a tool post 30 `rising,therefrom and supporting a tool Sli to act upon an articleheldin the .chuck 18.` This bar may be iockedin` any.`

suitable manner,` one means herein shown embodying a` tool har operating-lever 3Q securedto a rock shaft i' locatedi` substantially under and. in line with the tool bar extending'in position to be operated upon. by ai rock shaft oaeratino' cani 3301i tliefshaft 141.1..

A' tool bar operatingarm 34, secured to the tool bar, projects `outwardly therefrom and rests. against'a tool bar: operating'cam havingv a. cam aceto,` receive saidV ariny to move the bar longitudinally as `fit iis-rocked.`

in@ cnef direction, the "har being, rocked in the oppositer direction by a spring 53 or like' part secured,y at one end-fte a spring rod? and its other end` toa fixed part of the-niachine; arock armsecured to thercckishaft' 7. Y

The ends of the Vrod` 51 yiei'daling-.fly` and loosely engage the `armi and. step; 55 in the A. rod; 51'f connects the arm-` Set; with.

rock Yarm 52k byk means of the end .of oneY part being seated in a recess in the other part, said step being adjustably mountedas by'beingscrew threaded into the arm 52.

lupon a stepV spring 56, as shown in detail in Fig. 3 of v.the drawings.'

"'fThe cam'35 is preferably a plate removably secured to the frame of the machine, the

cam being located on one side of the plate Y and with one end inclined, forming an active face," the remainder of the edge Vbeing' straight.Y By using the cam as `show-n inthe drawingsv longitudinal movement of the tool bar willbe obtained by'reason of its rocking movemennand by reversing the cam end for end, the tool bar may berocked without imparting longitudinal movement thereto.

By employing cams with working faces in-V clined at different `angles the extent or amount rof longitudinal movement ofthe bar 29 as compared with the lateral movement of the tool may be regulatedxto any degree. The use of the cam would be required in connection with the form of shaving tool shown in Fig.V 1, or with a pointing tool7 both of which are held by the tool ypost 30, these tools requiring a movement diagonallywithrespect to the axis of the spindleso that, asin the case of the shaving tool,

' the flat surface ofthe head and the beveled friov under s'urfacethereof may be simultaneously cut by the same tool. A spring 57 upon the toolbar may be employed tov move the bar longitudinally and return it to its'normal position from which it may have been moved by the cam plate 35. By means of the arrangement thus far described, the machine isadapted for 'use' asV a pointer or shaver VVonly, or as a combined shaver and slotter.

vAnother means-for operating'the bar 29 f embodies a threading cam 59 secured tothe driving shaft 9 andV positioned to act, when requ1red,upon the toolbar, the connection "between these parts being of any suitable form. V14s shown a threading arm 60 projects from the tool bar laterally thereof and has a roller adaptedtc rest against the cam 59. A'former rest 61 is pivotally mounted in the. frameand has a for-mer 62 intheY '1 shape of a plate adjustably mounted thereon. j The armV 34 from the tool bar rests in engagement with this former, the arm 60 being 1n fact van extension-of the ,arm 34. Whenused asa threader the tool bar operating rod Y51 will be engaged in a socket v*underneathV the former rest, being, of course, ofl proper length to serve its purpose. It will be readily understood that when the lmachine is used as a threader the tool bar op'eratmgcam' will not be employed, thebar 29 being moved lengthwise to properly positionfther arm 34 over the former 62. In

doing this a collar bearing the spring rod- 54 may be located in a different position to loosen the spring that thus becomes inactive, and a collar 66 will be clamped against the spring 67 to tension it and cause it to move the bar in one direction against the action of the threading cam 59. The toolbar 29 will, ofcourse, be properly positioned in its bearings, and when the arm 34 rests upon the former 62 the roll on the arm 60 will be in proper position for action by the cam 59.

When used as a threader, as above described, the shaft 9 and cam shaft 14 will bc driven from a single source, as from the spindle 17, the belt to the pulley 8 being omitted, and a train of gears 63 being employed forcthis driving purpose. In this case the pinion on the spindle 17 meshes with a gear secured to rotate with the pinion 64 that meshes with a change gear secured to the shaft 9. yThe gear 64 is mounted on a movable support68, so that it may be engaged with or disengaged from its mating gear to complete or break the connection bctween the spindle and the main driving shaft 9.

A saw sup orting lever 36 is mounted between ears 3( projecting from a bracket 3S rising from the table 6. This lever has a head 39 to which a saw support 40 is adjustably secured, as by means of tongued and grooved parts and screws, the lat-ter holding the support firmly in place on the head. A 'saw actuating shaft 41 is mounted in the support and is driven as by means of a belt passing around a pulley v42 secured to the shaft. A bevel gear on the opposite end of the shaft 41 from said pulley meshes with a bevelgear on a connecting shaft 43 mounted in the support, the opposite end of the shaft 43 from the bevel gear having a pinion 44 meshing with a gear 45 secured to a saw shaft 46 mounted in the support and having a slotting saw 47 located opposite the chuck 18. The lever 36 is operated as by means of a saw operating cam 48 secured to the cam shaft-.14.

A back rest lever 49 is mounted on the frame to be actuated by a back rest cam 50 on the shaft 14, the opposite end of the lever being formed to support screws or other articles, as plainly shown in Fig. l of the drawings.

VThe screw is acted upon by the tool 31 and the saw 47, the latter heilig moved toward the article by means of the saw supporting lever 36. When the operation of thi` tool 31 has been completed the belt is automatically shifted from the fast pulley 21 to the loose pulley 22, and the cam 2S actuates the brake 27 to quickly stop the rotation of ,iieml Y chnckare Eoperated byfthefchucking lever 19 I .to openthe javys at the proper time for ejectionA ofgthe article. Y

' It fvvill lie-notedV that the inach-neherein described may` readily; bearranged; to yperform the single operations of.slotti ng,.shav

ing,p0inting,uor threading," and the `comhinedeperatiensofshavingand slotting, or

of threading and pointing,V andgthatthe ,machine maybereadily` adaptedfor performing .otheij0perations. 1n the operation of slQtting, 'the :spindleivill be, held stationary/and onlythe cani.48l ofthe camshaft '.Will Abe yutilized in connection With-'the chiicling cam 20, the feed finger camf. and i one face ofthe camQiandL the backrest I so .Inmthe operation of Vshaving ghe toni., illustrated in Fig. l may VVbe employed, the

.spindle will be driven cnnstantly Without v requirementlfor belt shifting, thechucking mechanism `Will l.be employed and the cani .33,

. rock shaft or tool-bar 29 and. cain plate 35 lshifting and brake mechanismptheshaft 9 and Cain;` `Shaft` la, being driven directly ,from thepiiidle ,17 The cani 133 and roclrshaft 7. will be. used toroek` the; threading tool into the cuts as required, the cani plate lbeing .removed .asahevedescribed ior ythe Lcombined operation of sletting and, shavingytheparts will be arranged and .,einployed'; asyillustrated in Fig. l l, the threadi-ng mechanism above described being idle, and it :Will be understood that the `coi'inection yjhetween .the spindle.. 17'? and -cai'n'shaft 114i is only necessary yduringthe threadingoperations although' it lmay hel made use of at v,other `times Vfi-f `f desired..

In the .operationofithreading and point- A.ing...tlie threading mechanisin above idcscribed fivillxbe i employed and `the pointing tool ,will be mounted lonlthenhead 39.

' While f I jihaveillnstrated dierein :one con- .Structi'oniof /niechanism embodying `my invention', thismay be .changed toa greater `@rilessen .degree ivitho'iit departing from the spirit-and ..11tentofy.the invention which is, :thereformnotlimitedftoa mechanism constructed in len/act accordance'l-with ithat. .illustrated and -.describediherein. v

,IQl-lmpl. ,n1achinei;.for iformingarticles from minding la shafnxbelt faetiiating ,means jyfor driving said shaft, a -achucking .spindlen Imeans ,if-Q1'.k driving saidspindle independently of ythe .f cam shaft, i .means ,for

operating upon an article heldbyaechilck 0n said spindle, .,connections between. ,.said7 4spindle ,mechanism Vand i. the cani `shaft `.to control Qperationyjof the Kspindle, `a saw,

:means i independent .of said i camishaft 4.for driving said saw, and connections .between said saw i mechanism c and the cam shaft.

.2. A machine lfor forming aarticleswfromnietal includ-,inga camshaftWit-h, belt Adriven f mechanism forioperatingi it, i a` chuck spindle, means.; for i driving said spindleJ independently `of the cam shaft, means foroperatings upon l,an...article A heldgbyga Ichuclrpon said Y spindle,y means :Connected with. the cani shaft to. control .ropelation A. of ithe., chuck 1 spindle,

.means connectedwiththe camshaft for contlO-.ling 1 the ir'otation ofi the.,cliuclr spindle,

n savv,means independent of said cam shaft for rotating the saw, andineansconnected Awith said 4cani :shaft 4for `feeding the saw.

3. A :,niachine for fforming rarticles vfroni device, means. for. actuating i said chncking vdevice independently of .the Lcani' '.sha'ft,

`lfneans .for-operating` uponan article held .metalinchiding a ,.camshaft, belt .actuatingtao means for-.driving-,said shaft, aichncking by said v.chucking device, a. saiv, 4.means .inn.5

dependent of said cam shaft `for driving said saw, .ands connectionsY between sai dlsaw mechanism and. the camshaft.

Li. n. machine for Vi'orining 4,articles from .metal including a cam shaftiwith belt driven `i means for operating it, a chuck spindlerhaving i means independent .of the cani shaft for rotating-.said spindle, means forsoperat- Aing upon.. an .article :held i by a chuck fon said spindlej spindle operating means :con-

LO O

nected with the cam shaft, a brake r4coiinested with.. said cam. Vshaft to stop `rctation .of the spindle, and means for. operating Affeeding ;.nie'chai'iism for `siippiying articles `to said spindle.

5.. A machine for forming articles-frein ymetal inclu ding a camshaft.ivithlbelt driven means for 'opei'atingiu a chuck sy'iin'dle having `meansindependent `of *the cam shaft tio forrotating said spindle,nieans for operattl 5 ving lupon an airticle held by a Vchuck `on said spindle, spindle operating means connected with the cam shaft, asaw :for sletting an article Aheld by said lchuck, and a brake connected With said can'itsh'aft te stop rotation of .the spindle. `for operation Vof said fsaw.

16. Ainachinefor formingv articles Vfrom metal .including a cani shaft With'vhelt driven meansfor operating it, a chuck spindleihav- ,zing...means independent of the cani shaft foi-[operating said spindle, means .for operating upon an article held by axchiick "on-fsaid spindleymeansconnected fvvith the cam shaft rlfericcntnoliing operation eef the spindle, ii-tn and a brake connected With the cam shaft and operated by cams thereon independently of said controlling means to stop rotation of i the spindle.

7. Ina machine Yfor-forming-articles from metal, a chuck Spindle, belt operated means vfor drivingl said spindle', a belt shifter lever for controlling the belt on said spindle, a cam for operating said lever, and a handle onsaid lever'as ,a means for manuallyoperating said lever.

8. In-a machine for forming articles from,

. metal, a cam shaft with means for operating it, a Vchuck'spindle having fast and loose pulleys, a brakellever; connected With a cam Von said camshaft and having a l*brake v adapted to be pressed against the face of the tight pulley, a 'belt shifter for controlling the beltl on said pul1eys,r'said shifter being 'connectedrwith the'rcam on the cam shaft, Vand a handle onvthe shifter asa meansy for manually operating it.l Y 9. In amachine for forming articles from V metal, a chuckspindle, belt operated means for driving said spindle, a belt shifter lever for controlling the belt on said spindle, means for operating said lever, a fork at `the' end of the lever; to receive said belt,

one of the branches of the fork being extended and formedinto a handle for manual voperation of said lever.

.1.05 In a machine for forming' articles from metal, a'chuck spindle with means forV operating it, supports rising from the bed of the'machine, a tool bar supporting atool to-operate upon an article held by the chuck, said bar being rotatably mounted in saidsupports, meansfor rocking the tool bar,-and a cam secured'to the side of one of said supports and located to engage a pro- 'jection from the tool bar to cause longitudinal movement thereof by reasonof its rock- Ying movement.

V11.1InY a Vmachine' for vforming .articles from metal, a chuck with means Vfor operating-it, a toolbar Vsupporting a tool to operate upon ,articles held by the chuck, means `for rocking the tool bar, and a cam having a Working anda non-Working face, the

i ate Yupon'articles held by the chuck, means for rocking thetool bar, and a reversible Vcam having 'a Working face 'arranged at such angle as will cause longitudinal movementof the Vba'rby-reason of its rocking vmovement, a-nd Without change of the'cam, [a face to cause no longitudinal movement by reasonof the rocking movement of said bar.

I 13; In ai ,machine for farming articles from metal, a chuck spindle with means for operating it, a tool bar supporting a tool to Yoperate upon an article held by the chuck,

vmovement of Said bar and in its other posiv tion to impart no movement to said bar.

14. In a .machine for forming articles from metal, a chuck With means for operating it, a tool bar supporting a tool to operate upon articles held by the chuck, an arm secured to the tool bar, a rock shaft with means for operating it, an arm extending from said rock shaft, a rod loosely resting in sockets in said arms, and means for forcing said arms in opposite directions toward each other. l

15.In a machine for forming articles from metal, in combination with a tool bar, an arm projecting therefrom, a rock shaft with means for operating it, an arm projecting from the rock shaft, a step adjustably mounted in said arm, a rod resting loosely in sockets in said step and arm projecting from the tool bar, and means for pressing said arms in opposite directions normally toward each other.

In a machine for forming articles from metal, in combination With a tool bal', an arm projecting therefrom, a rock shaft with means for operating it, an arm projecting from said rock shaft, a spring located in a socket supported by said arm, a rod loosely resting upon said spring at one end and with its opposite end loosely resting in a lsocket in the tool bar arm, and means for j normally pressing said arms toward each other.

17. In a machine for forming articles from metal, a chuck with means for operating it, a tool bar supporting a tool to operate upon articles held by the chuck and having longitudinal and rotary movement, a cani plate for imparting one of said movements to said bar, an arm projecting from the tool bar in contact With said cam plate, a rock shaft with means for operating it, and means connected with said bar for imparting the other movement thereto.

18. In a machine for forming metallic articles, a frame, a vchuck mounted in the frame, a tool bar mounted for longitudinal and rotary movement in the frame, a rock shaft, an arm projecting from the tool bar,

means upon the frame for removable attachment of a cam plate thereto to operate upon the arm from the tool bar, a threading cam shaft mounted in the frame and having a threading cam arranged to operate upon the tool bar, a former base pivotally mounted on the fi'ame to operate upon an arm projecting from the tool bar, means for llocating the former base in van inoperative position, an arm projecting from the rock shaft, andV means for connecting said arm with the former base or With the arm projecting from the tool bar.

19. Ina machine for forming metallic articles, a frame, a chuck mounted in the frame,

a tool bar, means for positioning said toolbar in diEerent positions, said bar having longitudinal and rotary movement in the frame in either of said positions, a rock shaft, an arm projecting from the tool bar, means for operating the tool bar in either of said positions, an arm projecting from said rock shaft, and means for connecting the arms projecting from the tool bar and rock shaft -for operation of the bar in either of its Workmg positions.

20. In a machine for forming metallic articles, a frame, a chuck mounted in the frame, a tool bar mounted for longitudinal and rotary movement in the frame, a rock Shaft, an arm projecting through the tool bar for operation by dili'erent devices at the opposite ends of said arm, separate mechanisms for independently operating upon said arm, an arm projecting from said rock` means for securing the arm to the tool bar,

mechanism for operating upon each end of said arm to impart movement to the tool bar, an arm projecting from said rock shaft and means for connecting the arm projecting from the tool bar and that projecting from the rock shaft for operation of said tool bar.

HARRY l?. TWN SEND.

Witnesses:

ARTHUR B.. JENKINS, A. E. OBRIEN.

nonies et this patent may be obtained for five cents each, by addressing the Commissioner of Patente,

Washington, D. C. 

